User-agent: *
Disallow:

User-agent: Baiduspider
Disallow: /

user-agent: Exabot
disallow: /

User-agent: Yandex
Disallow: /

user-agent: AhrefsBot
disallow: /

User-agent: discobot
Disallow: /

User-agent: MLBot
Disallow: /

User-agent: plukkie 
Disallow: /

User-agent: WBSearchBot
Disallow: /